com.bigdata.rdf.lexicon

Interface ISubjectCentricTextIndexer<A extends IHit>

All Superinterfaces:

ITextIndexer<A>

All Known Implementing Classes:

BigdataSubjectCentricFullTextIndex

public interface ISubjectCentricTextIndexer<A extends IHit>
extends ITextIndexer<A>

Abstraction for the text indexer for RDF Values allowing either the built-in bigdata FullTextIndex or support for Lucene, etc.

Version:

$Id: ITextIndexer.java 4585 2011-06-01 13:42:56Z thompsonbry $

Author:

Bryan Thompson

See Also:

AbstractTripleStore.Options#TEXT_INDEXER_CLASS

Nested Class Summary

Nested classes/interfaces inherited from interface com.bigdata.rdf.lexicon.ITextIndexer

ITextIndexer.FullTextQuery

Method Summary

Methods

Modifier and Type	Method and Description
void	index(IV<?,?> subject, Iterator<BigdataValue> valuesIterator) Add the terms to the full text index so that we can do fast lookup of the corresponding term identifiers.

Methods inherited from interface com.bigdata.rdf.lexicon.ITextIndexer

count, create, destroy, getIndexDatatypeLiterals, search

Method Detail

index

void index(IV<?,?> subject,
         Iterator<BigdataValue> valuesIterator)

Add the terms to the full text index so that we can do fast lookup of the corresponding term identifiers. Only literals are tokenized. Literals that have a language code property are parsed using a tokenizer appropriate for the specified language family. Other literals and URIs are tokenized using the default Locale.

In the subject-centric text index, these tokenized literals are rolled up by subject rather than using the IV for the literals as the docId in the text index.

Parameters:

subject - The subject to which these values belong.

itr - Iterator visiting the terms to be indexed.